1
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Ekanayaka RP, Tilakaratne WM. Impact of histopathological parameters in prognosis of oral squamous cell carcinoma. Oral Dis 2024. [PMID: 38938003 DOI: 10.1111/odi.15035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/18/2024] [Accepted: 05/23/2024] [Indexed: 06/29/2024]
Abstract
OBJECTIVE Squamous cell carcinomas comprise approximately 90% of all oral malignancies. There is a wide geographical variation in the incidence of oral cancer, with South and South East Asia (SSEA) accounting for almost two third of new cases. The prognosis of oral cancer is influenced by a vast array of factors including demographic, clinical, histopathological and molecular factors. The objective this review is to analyse the impact of histopathological features assessed in hematoxylin and eosin stained sections on the prognosis of OSCC. MATERIALS AND METHODS Medline and Scopus data base search was performed in order to identify related articles on histopathological parameters in predicting prognosis of oral squamous cell carcinoma. The primary emphasis is on the studies conducted in SSEA, with an accompanying comparison of their findings with those from research conducted in other parts of the world. RESULTS It has been shown that the number of studies conducted in SSEA is not proportionate to the high prevalence of Oral Cancer in the region. There is no significant difference between the findings from SSEA compared to the rest of the world. It is clearly shown that most histopathological parameters can be accurately used to predict nodal metastasis and prognosis. CONCLUSIONS Histopathological parameters can be used reliably in planning treatment of Oral cancer. Clinicians should combine clinical and histopathological parameters in drawing treatment plan for Oral Cancer.
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Affiliation(s)
- R P Ekanayaka
- Department of Oral Pathology, Faculty of Dental Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - W M Tilakaratne
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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2
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Gattani V, Pawar S, Gupta C, Bhola N, Sonpal P, Agrawal P. Bridging Tradition and Modernity: Embracing the Bipaddled Pectoralis Major Myocutaneous Flap for Challenging Oral Cavity Defects in the Free Flap Era. Cureus 2024; 16:e62341. [PMID: 39006683 PMCID: PMC11246768 DOI: 10.7759/cureus.62341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 06/13/2024] [Indexed: 07/16/2024] Open
Abstract
Oral squamous cell carcinoma is a serious global issue, with the prognosis decreasing as the disease severity increases. The implications of this condition are so disastrous that they cause a lot of suffering for the individual. Early diagnosis has proven to improve patients' overall survival and quality of life. Surgery remains the mainstay in treating oral carcinoma. It is aimed at the complete removal of the cancerous lesion along with the management of cervical nodal metastasis. Larger defects call for reconstruction with bulky flaps. In our case, we had a composite defect postresection of the cancerous lesion, which was reconstructed using a bipaddled pectoralis major myocutaneous flap.
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Affiliation(s)
- Vaishnavi Gattani
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Wardha, IND
| | - Shreya Pawar
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Wardha, IND
| | - Chetan Gupta
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Wardha, IND
| | - Nitin Bhola
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Wardha, IND
| | - Parmarth Sonpal
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Wardha, IND
| | - Palak Agrawal
- Oral and Maxillofacial Surgery, Sharad Pawar Dental College and Hospital, Wardha, IND
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3
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A S, Mehta R, Nagarkar NM, Bodhey NK, Gupta RK, Satpute SS. Clinical, Radiological, and Pathological Correlation of Mandibular Invasion in Carcinoma Bucco-alveolar Complex. Indian J Surg Oncol 2024; 15:385-396. [PMID: 38741646 PMCID: PMC11088584 DOI: 10.1007/s13193-024-01903-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 02/15/2024] [Indexed: 05/16/2024] Open
Abstract
A prospective cross-sectional study was conducted to correlate clinically, radiologically, and pathologically the mandibular invasion in carcinoma bucco-alveolar complex. All biopsy-proven oral cavity cancer cases (64 patients) were assessed clinically and radiologically for involvement of the mandible. Preoperative clinicoradiological findings were compared with postoperative histopathological findings. In our study, oral cancer was 4 times more prevalent in males as compared to females and clinical evaluation was found to be highly sensitive in predicting mandibular invasion. Orthopantomogram showed sensitivity of 66.6% and specificity of 100%. CT scan showed sensitivity of 100% and specificity of 46% whereas MRI showed sensitivity of 54.5% and a specificity of 96%. MRI correlates well with final histopathology in predicting size of tumor. Prevalence of bony invasion in carcinoma oral cavity was 18%. We noted an inverse relation with tumor differentiation and mandibular invasion, and none of the verrucous carcinoma lesions showed mandibular invasion. Association of clinical T and N staging with postoperative histopathology was found to be statistically significant. Despite recent advances in molecular biology, radiological techniques, and newer modalities like visual surgical planning, exact measurement of bone invasion is still challenging. At present, CT scan and MRI along with clinical evaluation are widely used to evaluate mandibular invasion in carcinoma oral cavity, and all these are complementary to each other. The recent progress in tissue engineering technologies and stem cell biology has significantly promoted the development of regenerative reconstruction of jawbone defects.
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Affiliation(s)
- Subinsha A
- Department of Otorhinolaryngology-Head and Neck Surgery, AIIMS, Raipur, Chhattisgarh India
| | - Rupa Mehta
- Department of Otorhinolaryngology-Head and Neck Surgery, AIIMS, Raipur, Chhattisgarh India
| | - Nitin M. Nagarkar
- Department of Otorhinolaryngology-Head and Neck Surgery, AIIMS, Raipur, Chhattisgarh India
| | | | - Rakesh Kumar Gupta
- Department of Pathology and Laboratory Medicine, AIIMS, Raipur, Chhattisgarh India
| | - Satish S. Satpute
- Department of Otorhinolaryngology-Head and Neck Surgery, AIIMS, Raipur, Chhattisgarh India
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Wang X, Zheng L, Zhang J, Zhang J. Evaluation of outcomes after conservative mandibular surgery in patients with oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2023; 52:1111-1119. [PMID: 37271626 DOI: 10.1016/j.ijom.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 06/06/2023]
Abstract
This study aimed to assess preoperative radiological and clinical examinations for identifying bone status and to evaluate survival outcomes in patients undergoing marginal mandibulectomy for the primary treatment of oral squamous cell carcinoma. The medical records, enhanced computed tomography (CT) scans, and pathological specimens of these patients were reviewed. Disease-free (DFS), local recurrence-free (LRFS), and osteoradionecrosis-free (ORNFS) survival were analysed. The study included 104 patients. The preoperative CT and clinical examinations achieved a sensitivity of 45.8% and specificity of 100% for judging bone condition. LRFS was 79.6% and DFS was 68.8%. Pathological bone invasion in significantly affected DFS (P = 0.597), while DFS was significantly higher for those with a lower clinical tumour stage (1/2 vs 3/4; P = 0.005) and postoperative radiotherapy (P = 0.011). Among 39 patients receiving postoperative radiotherapy, ORNFS was 75.2%. Postoperative chemotherapy significantly decreased ORNFS (P = 0.009). Tumour subsite (P = 0.003) and the resection site (P = 0.035) significantly affected the remaining bone height. The results indicate that CT and clinical examinations cannot precisely identify superficial bone damage, but work well in selecting patients for marginal resection. Adhering to current indications, this resection approach can guarantee safe bone margins in terms of survival outcomes.
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Affiliation(s)
- X Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - L Zheng
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, PR China.
| | - J Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - J Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, PR China
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5
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Matsui C, Escandón JM, Mohammad A, Tanaka T, Wynn ET, Mizuno H, Roche N. Clinical applications of the chimeric anterolateral thigh (ALT) flap in head and neck reconstruction. Acta Chir Belg 2023; 123:473-480. [PMID: 35499297 DOI: 10.1080/00015458.2022.2073016] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND Surgical site infection (SSI) is a common complication following head and neck surgery. Dead space at the excision site can increase the risk of infection, abscess formation, and mortality. Herein, we evaluated the performance of the chimeric anterolateral thigh (ALT) flap in addressing these concerns. METHODS Patients who underwent oncologic head and neck reconstruction between October 2016 and November 2021 were divided in two groups: a normal ALT flap and a chimeric dead space filling (DSF) ALT-vastus lateralis flap group. We evaluated the postoperative outcomes. RESULTS Twenty-five patients treated with normal ALT flaps (34.7%) and 47 with DSF ALT flap group (65.2%) were included. Only one ALT per case was necessary. Most of the cases involved tongue (31.9%) and lower gingival reconstruction (27.8%). The time to harvest the DSF ALT flap was 134.3 min when compared to the normal ALT flap (116.2 min, p < .001). Vascular occlusion, flap loss, partial necrosis, and fat necrosis were not observed among the different groups. CONCLUSION The DSF process can be used as a preventive measure for SSI or vessel exposure due to radiation-induced skin damage. This flap allows same-site reconstruction if the primary tumor recurs by using the pedicle of the chimeric flap for reattachment of another free flap.
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Affiliation(s)
- Chihiro Matsui
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Joseph M Escandón
- Division of Plastic and Reconstructive Surgery, University of Rochester Medical Center, Strong Memorial Hospital, New York, NY, USA
| | - Arbab Mohammad
- Aarupadai Veedu Medical College and Hospital, Puducherry, India
| | | | - Ei Thinzar Wynn
- Department of Plastic and Reconstructive Surgery, Countess of Chester Hospital NHS Foundation Trust, Chester, UK
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Nathalie Roche
- Department of Plastic and Reconstructive Surgery, Ghent University Hospital, Ghent, Belgium
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Surgical Margins in 3D Planned Mandibular Resections for Squamous Cell Carcinomas of the Oral Cavity. J Craniofac Surg 2022; 34:e225-e228. [PMID: 36730970 DOI: 10.1097/scs.0000000000009068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 08/14/2022] [Indexed: 02/04/2023] Open
Abstract
PURPOSE Three-dimensional (3D) planned mandibular resections using cutting guides and preplanned plates are now widely used in oncological surgery. The main advantages are the gain of time, precision, and esthetic outcomes. The drawbacks include costs, time for planning, and printing the surgical tools. This time between the radiological data and the surgery may allow tumor progression, rendering the custom-made guides useless. There is no consensus regarding surgical margins that should be planned to ensure a safe oncologic outcome. The purpose of this retrospective study is to evaluate if the planned bony margins are adequate. MATERIALS AND METHODS Inclusion criteria were: Squamous cell carcinomas of the anterior and lateral floor of mouth with mandibular invasion (T4); mandibular resection using 3D planning and cutting guides. Between June 2015 to December 2019, 16 patients met the criteria. The time between the planning and the surgery was recorded. The authors decided to use a margin of at least 1 cm on the preoperative computerized tomography scans on each side of the tumors in our planning for all patients. The authors then measured the distance of the bone resection on the pathological specimen. RESULTS All 16 patients had safe bone surgical margins (R0). The average time from the scanners used for the planning to the surgery was 33 days. DISCUSSION All the cutting guides could be used. The pathology examination showed safe oncological margins and no patients required further resection. A 1 cm margin during 3D planning for mandibular resections with 3D printed cutting guides, in patients with T4 Squamous Cell Carcinomas can therefore be considered safe.
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Azees PAA, Natarajan S, Amaechi BT, Thajuddin N, Raghavendra VB, Brindhadevi K, Pugazhendhi A. An empirical review on the risk factors, therapeutic strategies and materials at nanoscale for the treatment of oral malignancies. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Adjuvant therapy improves survival in pT4aN0 oral cavity squamous cell carcinoma with bone invasion. Am J Otolaryngol 2022; 43:103303. [PMID: 34894450 DOI: 10.1016/j.amjoto.2021.103303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 11/28/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The prognostic significance of bone invasion in oral cavity squamous cell carcinoma (OCSCC) after accounting for tumor size, nodal spread, and surgical margins is controversial. The aim of this study is to determine whether patients with pT4aN0 oral cavity squamous cell carcinoma with bone invasion have improved overall and disease-free survival with adjuvant treatment. METHODS We conducted a retrospective review of medical records from 64 patients with stage pT4aN0 due to mandibular involvement who underwent surgery from 2000 to 2020. Kaplan-Meier analysis compared disease-free survival and overall survival between groups who underwent surgery only versus surgery and adjuvant therapy. The prognostic impact of adjuvant therapy was assessed using multivariate analysis and reported as hazard ratios. RESULTS There were no statistically significant differences in clinicopathologic features or mean follow-up between patients who received surgery only and patients who received surgery with RT/CCRT (radiotherapy/concurrent chemoradiation therapy). 5-year disease-free (42.5% versus 65.9%, p = 0.02) and overall survival (43.6% versus 69.0%, p = 0.014) were improved in groups who received surgery and RT/CCRT. Regression analysis controlling for clinicopathologic characteristics, including tumor size, identified radiation as an independent predictor of improved disease-free survival (HR: 0.04, p < 0.001) and overall survival (HR: 0.10, p < 0.001). CONCLUSION Adjuvant RT/CCRT in patients with pT4N0 OCSCC with mandibular bone involvement is associated with improved disease-free and overall survival. This association was significant regardless of tumor pathologic features such as size or margin status. These findings may help guide physicians in counseling patients regarding risks and benefits of adjuvant RT/CCRT and inform practice guidelines.
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9
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Dolens EDS, Dourado MR, Almangush A, Salo TA, Gurgel Rocha CA, da Silva SD, Brennan PA, Coletta RD. The Impact of Histopathological Features on the Prognosis of Oral Squamous Cell Carcinoma: A Comprehensive Review and Meta-Analysis. Front Oncol 2021; 11:784924. [PMID: 34858861 PMCID: PMC8631280 DOI: 10.3389/fonc.2021.784924] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 10/18/2021] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Over many decades, studies on histopathological features have not only presented high-level evidence of contribution for treatment directions and prognosis of oral squamous cell carcinoma (OSCC) but also provided inconsistencies, making clinical application difficult. The 8th TNM staging system of OSCC has acknowledged the importance of some histopathological features, by incorporating depth of invasion (DOI) to T category and extranodal extension (ENE) to N category. The aim of this systematic review with meta-analysis is to determine the most clinically relevant histopathological features for risk assessment and treatment planning of OSCC and to elucidate gaps in the literature. METHODS A systematic review was conducted using PRISMA guidelines, and the eligibility criteria were based on population, exposure, comparison, outcome, and study type (PECOS). PubMed, Cochrane, Scopus, and Web of Science were searched for articles exploring the impact of histopathological features on OSCC outcomes with Cox multivariate analysis. Pooled data were subjected to an inverse variance method with random effects or fixed effect model, and the risk of bias was evaluated using quality in prognosis studies (QUIPS). Quality of evidence was assessed with the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) criteria. RESULTS The study included 172 articles published from 1999 to 2021. Meta-analyses confirmed the prognostic potential of DOI, ENE, perineural invasion, lymphovascular invasion, and involvement of the surgical margins and brought promising results for the association of bone invasion, tumor thickness, and pattern of invasion with increased risk for poor survival. Although with a small number of studies, the results also revealed a clinical significance of tumor budding and tumor-stroma ratio on predicted survival of patients with OSCC. Most of the studies were considered with low or moderate risk of bias, and the certainty in evidence varied from very low to high. CONCLUSION Our results confirm the potential prognostic usefulness of many histopathological features and highlight the promising results of others; however, further studies are advised to apply consistent designs, filling in the literature gaps to the pertinence of histopathological markers for OSCC prognosis. SYSTEMATIC REVIEW REGISTRATION International Prospective Register of Systematic Reviews (PROSPERO), identifier CRD42020219630.
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Affiliation(s)
- Eder da Silva Dolens
- Graduate Program in Oral Biology, School of Dentistry, University of Campinas, Piracicaba, Brazil
- University of Western São Paulo (UNOESTE), Presidente Prudente, Brazil
| | - Mauricio Rocha Dourado
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
| | - Alhadi Almangush
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
- Department of Pathology, University of Helsinki, Helsinki, Finland
| | - Tuula A. Salo
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
- Department of Pathology, University of Helsinki, Helsinki, Finland
- Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Clarissa Araujo Gurgel Rocha
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil
- Department of Propaedeutics, School of Dentistry, Federal University of Bahia, Bahia, Brazil
| | - Sabrina Daniela da Silva
- Department of Otolaryngology Head and Neck Surgery, Sir Mortimer B. Davis-Jewish General Hospital, Faculty of Medicine, McGill University, Montreal, QC, Canada
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Department of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Peter A. Brennan
- Department of Oral and Maxillofacial Surgery, Queen Alexandra Hospital, Portsmouth, United Kingdom
| | - Ricardo D. Coletta
- Graduate Program in Oral Biology, School of Dentistry, University of Campinas, Piracicaba, Brazil
- Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba, Brazil
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Barroso EM, Aaboubout Y, van der Sar LC, Mast H, Sewnaik A, Hardillo JA, Ten Hove I, Nunes Soares MR, Ottevanger L, Bakker Schut TC, Puppels GJ, Koljenović S. Performance of Intraoperative Assessment of Resection Margins in Oral Cancer Surgery: A Review of Literature. Front Oncol 2021; 11:628297. [PMID: 33869013 PMCID: PMC8044914 DOI: 10.3389/fonc.2021.628297] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 03/15/2021] [Indexed: 12/15/2022] Open
Abstract
Introduction Achieving adequate resection margins during oral cancer surgery is important to improve patient prognosis. Surgeons have the delicate task of achieving an adequate resection and safeguarding satisfactory remaining function and acceptable physical appearance, while relying on visual inspection, palpation, and preoperative imaging. Intraoperative assessment of resection margins (IOARM) is a multidisciplinary effort, which can guide towards adequate resections. Different forms of IOARM are currently used, but it is unknown how accurate these methods are in predicting margin status. Therefore, this review aims to investigate: 1) the IOARM methods currently used during oral cancer surgery, 2) their performance, and 3) their clinical relevance. Methods A literature search was performed in the following databases: Embase, Medline, Web of Science Core Collection, Cochrane Central Register of Controlled Trials, and Google Scholar (from inception to January 23, 2020). IOARM performance was assessed in terms of accuracy, sensitivity, and specificity in predicting margin status, and the reduction of inadequate margins. Clinical relevance (i.e., overall survival, local recurrence, regional recurrence, local recurrence-free survival, disease-specific survival, adjuvant therapy) was recorded if available. Results Eighteen studies were included in the review, of which 10 for soft tissue and 8 for bone. For soft tissue, defect-driven IOARM-studies showed the average accuracy, sensitivity, and specificity of 90.9%, 47.6%, and 84.4%, and specimen-driven IOARM-studies showed, 91.5%, 68.4%, and 96.7%, respectively. For bone, specimen-driven IOARM-studies performed better than defect-driven, with an average accuracy, sensitivity, and specificity of 96.6%, 81.8%, and 98%, respectively. For both, soft tissue and bone, IOARM positively impacts patient outcome. Conclusion IOARM improves margin-status, especially the specimen-driven IOARM has higher performance compared to defect-driven IOARM. However, this conclusion is limited by the low number of studies reporting performance results for defect-driven IOARM. The current methods suffer from inherent disadvantages, namely their subjective character and the fact that only a small part of the resection surface can be assessed in a short time span, causing sampling errors. Therefore, a solution should be sought in the field of objective techniques that can rapidly assess the whole resection surface.
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Affiliation(s)
- Elisa M Barroso
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Oral and Maxillofacial Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Yassine Aaboubout
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Lisette C van der Sar
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Hetty Mast
- Department of Oral and Maxillofacial Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Aniel Sewnaik
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Jose A Hardillo
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Ivo Ten Hove
- Department of Oral and Maxillofacial Surgery, Leiden UMC, Leiden University Medical Center, Leiden, Netherlands
| | - Maria R Nunes Soares
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Lars Ottevanger
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Tom C Bakker Schut
- Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Gerwin J Puppels
- Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Senada Koljenović
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
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11
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Jacobs CD, Williamson H, Barak I, Rocke DJ, Kahmke RR, Suneja G, Mowery YM. Postoperative radiotherapy is associated with improved overall survival for alveolar ridge squamous cell carcinoma with adverse pathologic features. Head Neck 2021; 43:203-211. [PMID: 32969107 PMCID: PMC9113753 DOI: 10.1002/hed.26475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 08/24/2020] [Accepted: 09/09/2020] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Alveolar ridge squamous cell carcinoma (ARSCC) is poorly represented in randomized trials. METHODS Adults in the National Cancer Database diagnosed with ARSCC between 2010 and 2014 who should be considered for postoperative radiotherapy (PORT) based on National Comprehensive Cancer Network (NCCN)-defined risk factors were identified. RESULTS Eight hundred forty-five (58%) of 1457 patients meeting the inclusion criteria received PORT. PORT was associated with improved overall survival (OS) on unadjusted (hazard ratio [HR] 0.83, 95% confidence interval [CI] 0.70-0.98, P = .02) and multivariable (HR 0.78, 95% CI 0.64-0.94, P = .002) analyses. PORT was associated with significantly improved 5-year OS for patients with 1 (68% vs 58%, P < .001), 2 (52% vs 31%, P < .001), and ≥3 (38% vs 24%, P < .001) NCCN-defined risk factors. Prognostic variables significantly associated with worse OS on multivariable analysis included advanced age, primary tumor size ≥3 cm, high grade, positive margin(s), stage N2-3, level IV/V nodal metastasis, and extranodal extension. CONCLUSION PORT for resected ARSCC with adverse pathologic features is associated with significantly improved OS.
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Affiliation(s)
- Corbin D. Jacobs
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Hannah Williamson
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - Ian Barak
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - Daniel J. Rocke
- Department of Head and Neck Surgery & Communication Sciences, Duke University Medical Center, Durham, North Carolina
| | - Russel R. Kahmke
- Department of Head and Neck Surgery & Communication Sciences, Duke University Medical Center, Durham, North Carolina
| | - Gita Suneja
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Yvonne M. Mowery
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
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12
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Yue LE, Sharif KF, Sims JR, Sandler ML, Baik FM, Sobotka S, Everest S, Brandwein-Weber M, Khorsandi AS, Likhterov I, Urken ML. Oral squamous carcinoma: Aggressive tumor pattern of invasion predicts direct mandible invasion. Head Neck 2020; 42:3171-3178. [PMID: 32710523 DOI: 10.1002/hed.26360] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 05/12/2020] [Accepted: 06/16/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Aggressive histologic worst pattern of invasion (WPOI) in surrounding soft tissue has been shown to be predictive of higher local recurrence and poorer survival in oral cavity squamous cell carcinoma (OCSCC) patients. This study investigates whether aggressive WPOI can predict the mandibular invasion phenotype. METHODS Patients consecutively diagnosed with OCSCC undergoing a mandibulectomy (marginal or segmental) between 2013 and 2018 were reviewed. Senior physicians re-reviewed radiologic scans and pathologic slides of 44 cases. RESULTS Aggressive WPOI (WPOI-4, 5) is significantly associated with infiltrative bone invasion. Non-aggressive WPOI (WPOI-1, 2, 3) is significantly associated with the absence of bone invasion. CONCLUSIONS WPOI has become a useful tool that further characterizes the biologic behavior of OCSCC. Potentially, planned surgery may escalate from a marginal to segmental mandibulectomy based on aggressive WPOI for patients with radiographically uncertain cortical status. Further studies are needed to validate the relationship between OCSCC WPOI and mandible status.
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Affiliation(s)
- Lauren E Yue
- THANC (Thyroid, Head and Neck Cancer) Foundation, New York City, New York, USA
| | - Kayvon F Sharif
- THANC (Thyroid, Head and Neck Cancer) Foundation, New York City, New York, USA
| | - John R Sims
- Department of Otolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Mykayla L Sandler
- THANC (Thyroid, Head and Neck Cancer) Foundation, New York City, New York, USA
| | - Fred M Baik
- Department of Otolaryngology-Head and Neck Surgery, Stanford University Medical Center, Stanford, California, USA
| | - Stanislaw Sobotka
- Department of Otolaryngology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Sedef Everest
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | | | - Azita S Khorsandi
- Department of Radiology, New York Eye & Ear Infirmary of Mount Sinai, New York City, New York, USA
| | - Ilya Likhterov
- Department of Otolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Mark L Urken
- THANC (Thyroid, Head and Neck Cancer) Foundation, New York City, New York, USA.,Department of Otolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
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Namin AW, Zitsch RP, Layfield LJ. Variability in pathologic interpretation of mandibular invasion. Laryngoscope 2019; 130:1721-1724. [PMID: 31433069 DOI: 10.1002/lary.28252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/05/2019] [Accepted: 08/06/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVES/HYPOTHESIS Our objective was to identify the accuracy, sensitivity, and specificity of pathological interpretation of mandibular invasion by oral cavity squamous cell carcinoma (SCC) and compare the sensitivity of detecting mandibular invasion in the erosive versus the infiltrative patterns of invasion. We also aimed to describe the significance of the terminology the carcinoma "abuts the mandible" in pathologic interpretation of mandibular invasion. STUDY DESIGN Retrospective case series. METHODS Mandibulectomy specimens from patients who underwent surgical treatment for oral cavity SCC between January 1, 2005 and December 31, 2015 were retrospectively reviewed by a board-certified anatomic pathologist. The accuracy of pathologic interpretation of mandibular invasion was calculated using the retrospective interpretation of bone invasion as the true interpretation, which was compared to the interpretation on the original pathology report. Incidence of encountering the terminology the carcinoma "abuts the mandible" in the pathology report was calculated. RESULTS A series of 108 consecutive mandibulectomy specimens were reviewed. Sixty-nine percent (74/108) of cases were interpreted as having mandibular invasion. The accuracy of interpreting mandibular invasion was 84%. The sensitivities for interpretation of mandibular invasion for the erosive and infiltrative patterns of invasion were 77% (30/39) and 91% (32/35), respectively (P = .08). Nine percent (10/108) of pathology reports utilized the terminology the carcinoma "abuts the mandible," and 80% (8/10) of these cases exhibited mandibular invasion. CONCLUSIONS The accuracy of identifying mandibular invasion is 84%, indicating a certain degree of sampling error and variability in interpretation. A precise pathologic definition of mandibular invasion should be applied during the interpretation of these specimens to minimize variability. LEVEL OF EVIDENCE 4 Laryngoscope, 130:1721-1724, 2020.
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Affiliation(s)
- Arya W Namin
- Department of Otolaryngology-Head and Neck Surgery, University of Missouri, Columbia, Missouri
| | - Robert P Zitsch
- Department of Otolaryngology-Head and Neck Surgery, University of Missouri, Columbia, Missouri
| | - Lester J Layfield
- Department of Pathology and Anatomical Sciences, University of Missouri School of Medicine, Columbia, Missouri, U.S.A
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15
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Du W, Fang Q, Wu Y, Wu J, Zhang X. Oncologic outcome of marginal mandibulectomy in squamous cell carcinoma of the lower gingiva. BMC Cancer 2019; 19:775. [PMID: 31387576 PMCID: PMC6683491 DOI: 10.1186/s12885-019-5999-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 07/30/2019] [Indexed: 12/11/2022] Open
Abstract
Background There is a large amount of controversy about the best management of the mandible in oral squamous cell carcinoma (SCC), mainly owing to the inability to acquire accurate bone invasion status. Therefore, our goal was to analyse the oncologic safety in patients undergoing marginal mandibulectomy (MM) for cT1-2 N0 SCC of the lower gingiva. Methods Patients undergoing MM for untreated cT1-2 N0 SCC of the lower gingiva were retrospectively enrolled. The main endpoints of interest were locoregional control (LRC) and disease-specific survival (DSS). Results A total of 142 patients were included in the analysis, and a pathologic positive node was noted in 27 patients. Cortical invasion was reported in 23 patients, and medullary invasion was reported in 9 patients. The 5-year LRC and DSS rates were 85 and 88%, respectively. Patients with bone invasion had a significantly higher risk for recurrence than patients without bone invasion. However, the DSS was similar in patients with versus without bone invasion. Patients with a high neutrophil lymphocyte ratio had a higher risk for worse prognosis. Conclusions The oncologic outcome in patients undergoing MM for cT1-2 N0 SCC of the lower gingiva was favourable; bone invasion was not uncommon, but it significantly decreased the prognosis in patients undergoing MM.
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Affiliation(s)
- Wei Du
- Department of Head Neck and Thyroid, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan Province, People's Republic of China
| | - Qigen Fang
- Department of Head Neck and Thyroid, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan Province, People's Republic of China.
| | - Yao Wu
- Department of Head Neck and Thyroid, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan Province, People's Republic of China
| | - Junfu Wu
- Department of Head Neck and Thyroid, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan Province, People's Republic of China
| | - Xu Zhang
- Department of Head Neck and Thyroid, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan Province, People's Republic of China
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Surgical margins in oral squamous cell cancer: intraoperative evaluation and prognostic impact. Curr Opin Otolaryngol Head Neck Surg 2019; 27:98-103. [PMID: 30844923 DOI: 10.1097/moo.0000000000000516] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW To summarize recent findings regarding surgical management of oral squamous cell cancer (OSCC) through analysis of different intraoperative techniques for assessment of margins, evaluate the pros and cons of each, and ensuing prognostic impact. RECENT FINDINGS 'En bloc' OSCC resection and histopathologic evaluation of margins on the formalin-fixed specimen remain the 'gold standard' for oral oncologic surgery, whereas assessment of intraoperative surgical margins and its overall clinical value are still questioned and debated in the literature. The commonly applied evaluation of frozen sections still raises concerns regarding its efficacy and reproducibility; therefore, several ancillary diagnostic methods have entered the field of head and neck oncology in the last decades, aiming to support the surgeon in achieving tumor-free margins during ablative procedures. SUMMARY Poor prognosis of OSCC is strongly associated with residual tumor after surgery. Negative surgical margins are one of the strongest prognosticators for disease-free survival and locoregional control, but their intraoperative determination seems still to be suboptimal and needs better refinement. The most studied techniques to assess intraoperative margins include fluorescence, Raman spectroscopy, narrow band imaging, optical coherence tomography, and cytological bone margins analysis; each has its unique characteristics that are described in detail herein.
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Singh A, Mair M, Singhvi H, Mahuvakar A, Nair D, Nair S, Chaturvedi P. Incidence, predictors and impact of positive bony margins in surgically treated T4 stage cancers of the oral cavity. Oral Oncol 2019; 90:8-12. [DOI: 10.1016/j.oraloncology.2019.01.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/01/2019] [Accepted: 01/19/2019] [Indexed: 11/25/2022]
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Joo YH, Cho JK, Koo BS, Kwon M, Kwon SK, Kwon SY, Kim MS, Kim JK, Kim H, Nam I, Roh JL, Park YM, Park IS, Park JJ, Shin SC, Ahn SH, Won S, Ryu CH, Yoon TM, Lee G, Lee DY, Lee MC, Lee JK, Lee JC, Lim JY, Chang JW, Jang JY, Chung MK, Jung YS, Cho JG, Choi YS, Choi JS, Lee GH, Chung PS. Guidelines for the Surgical Management of Oral Cancer: Korean Society of Thyroid-Head and Neck Surgery. Clin Exp Otorhinolaryngol 2019; 12:107-144. [PMID: 30703871 PMCID: PMC6453784 DOI: 10.21053/ceo.2018.01816] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 12/14/2018] [Indexed: 01/08/2023] Open
Abstract
Korean Society of Thyroid-Head and Neck Surgery appointed a Task Force to provide guidance on the implementation of a surgical treatment of oral cancer. MEDLINE databases were searched for articles on subjects related to “surgical management of oral cancer” published in English. Results were restricted to systematic reviews, randomized control trials/controlled clinical trials, and observational studies. The quality of evidence was rated with use RoBANS (Risk of Bias Assessment Tool for Nonrandomized Studies) and AMSTAR (A Measurement Tool to Assess the Methodological Quality of Systematic Reviews). Evidence-based recommendations for practice were ranked according to the American College of Physicians grading system. Additional directives are provided as expert opinions and Delphi questionnaire when insufficient evidence existed. The Committee developed 68 evidence-based recommendations in 34 categories intended to assist clinicians and patients and counselors, and health policy-makers. Proper surgical treatment selection for oral cancer, which is directed by patient- and subsite-specific factors, remains the greatest predictor of successful treatment outcomes. These guidelines are intended for use in conjunction with the individual patient’s treatment goals.
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Affiliation(s)
- Young-Hoon Joo
- Department of Otorhinolaryngology Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae-Keun Cho
- Department of Otorhinolaryngology Head and Neck Surgery, Inje University College of Medicine, Busan, Korea
| | - Bon Seok Koo
- Department of Otorhinolaryngology Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Korea
| | - Minsu Kwon
- Department of Otorhinolaryngology Head and Neck Surgery, Eulji University School of Medicine, Daejeon, Korea
| | - Seong Keun Kwon
- Department of Otorhinolaryngology Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Soon Young Kwon
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Min-Su Kim
- Department of Otorhinolaryngology Head and Neck Surgery, CHA University School of Medicine, Seongnam, Korea
| | - Jeong Kyu Kim
- Department of Otorhinolaryngology Head and Neck Surgery, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Heejin Kim
- Department of Otorhinolaryngology Head and Neck Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Innchul Nam
- Department of Otorhinolaryngology Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong-Lyel Roh
- Department of Otorhinolaryngology Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Min Park
- Department of Otorhinolaryngology Head and Neck Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Il-Seok Park
- Department of Otorhinolaryngology Head and Neck Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Jung Je Park
- Department of Otorhinolaryngology Head and Neck Surgery, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Sung-Chan Shin
- Department of Otorhinolaryngology Head and Neck Surgery, Pusan National University School of Medicine, Busan, Korea
| | - Soon-Hyun Ahn
- Department of Otorhinolaryngology Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seongjun Won
- Department of Otorhinolaryngology Head and Neck Surgery, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Chang Hwan Ryu
- Department of Otorhinolaryngology Head and Neck Surgery, National Cancer Center, Goyang, Korea
| | - Tae Mi Yoon
- Department of Otorhinolaryngology Head and Neck Surgery, Chonnam National University Medical School, Hwasun, Korea
| | - Giljoon Lee
- Department of Otorhinolaryngology Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Doh Young Lee
- Department of Otorhinolaryngology Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Myung-Chul Lee
- Department of Otorhinolaryngology Head and Neck Surgery, Korea Cancer Center Hospital, Seoul, Korea
| | - Joon Kyoo Lee
- Department of Otorhinolaryngology Head and Neck Surgery, Chonnam National University Medical School, Hwasun, Korea
| | - Jin Choon Lee
- Department of Otorhinolaryngology Head and Neck Surgery, Pusan National University School of Medicine, Busan, Korea
| | - Jae-Yol Lim
- Department of Otorhinolaryngology Head and Neck Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Won Chang
- Department of Otorhinolaryngology Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jeon Yeob Jang
- Department of Otorhinolaryngology Head and Neck Surgery, Ajou University School of Medicine, Suwon, Korea
| | - Man Ki Chung
- Department of Otorhinolaryngology Head and Neck Surgery, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yuh-Seok Jung
- Department of Otorhinolaryngology Head and Neck Surgery, National Cancer Center, Goyang, Korea
| | - Jae-Gu Cho
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Yoon Seok Choi
- Department of Otorhinolaryngology Head and Neck Surgery, Yeungnam University College of Medicine, Daegu, Korea
| | - Jeong-Seok Choi
- Department of Otorhinolaryngology Head and Neck Surgery, Inha University School of Medicine, Incheon, Korea
| | - Guk Haeng Lee
- Department of Otorhinolaryngology Head and Neck Surgery, Korea Cancer Center Hospital, Seoul, Korea
| | - Phil-Sang Chung
- Department of Otorhinolaryngology Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea
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The "Flap Suture Anchoring" Technique for Safe Oral Floor Reconstruction With Preservation of Alveolar Process. J Craniofac Surg 2018; 29:1300-1304. [PMID: 29570530 DOI: 10.1097/scs.0000000000004533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Flaps-based microsurgery is routinely applied to reconstruct oral floor defects caused by oncologic resection. To prevent orocutaneous fistulae, flaps are frequently sutured with buccal vestibule mucosa after sacrificing the alveolar process. The patients suffered denture loss and irreversible structural damage. For reliable oral floor reconstruction with preservation of alveolar process, the authors introduced the flap "suture anchoring" technique. Oral floor, hemiglossal-oral floor, and tongue base-parapharyngeal wall-oral floor defects were included in this study. The flap anchoring technique involves structural oral floor reconstruction with a chimeric anterolateral thigh-free flap or radial forearm flap with adipofascial tissue extension. The dead space in oral floor is filled with vastus lateralis muscle or adipofascial tissue, then holes are drilled on the alveolar bone among tooth root, beneath the attached gingiva. Skin paddle is sutured with 4-0 sutures through the alveolar holes thus anchored to the mandible. By applying this technique, there was no wound infection or orocutaneous fistulae in all patients postoperatively, even experienced postoperative radiotherapy. In addition, a soft and natural jaw-tongue furrow could be formed to allow the free movement of tongue. Taken together, the flap anchoring technique offers a safe and reliable approach to recover oral function and preservation of occlusion.
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A worldwide comparison of the management of surgical treatment of advanced oral cancer. J Craniomaxillofac Surg 2018; 46:511-520. [DOI: 10.1016/j.jcms.2017.12.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/15/2017] [Accepted: 12/29/2017] [Indexed: 11/21/2022] Open
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Vaassen LA, Speel EJM, Kessler PA. Bone invasion by oral squamous cell carcinoma: Molecular alterations leading to osteoclastogenesis – a review of literature. J Craniomaxillofac Surg 2017; 45:1464-1471. [DOI: 10.1016/j.jcms.2017.04.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 04/11/2017] [Accepted: 04/21/2017] [Indexed: 12/15/2022] Open
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Lubek JE, Magliocca KR. Evaluation of the Bone Margin in Oral Squamous Cell Carcinoma. Oral Maxillofac Surg Clin North Am 2017; 29:281-292. [DOI: 10.1016/j.coms.2017.03.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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